The table projects t-shirt sales during an upcoming fundraiser x and the corresponding dollar profit y x 50 60 75 100 110 120 125 150 200 y 150 180 275 425 460 500 550 670 950 When using the median-fit method with summary points open paren 60 comma 180 close paren , open paren 110 comma 460 close paren , and open paren 150 comma 670 close paren , what is the approximate y -intercept of the best-fit model?